# 关键字

'''
False True None and as assert break yield
class continue def del elif else except lambda
finally for from global if import in is while
nolocal not or pass raise return try with
'''

# 变量的命名
# 1. 见名知意
name = "张三"
age = 11
# 2. 下划线命名法
first_number = 1

def query():
    return "query successfully"

def logout():
    return "sucessfully logged out"
# 3. 英文字母全部小写
salary = 100